Air-purifier.



E. L. GROSS.

AIR PURIFIER. APPLIdATION FILED JUNE 29, 1912 1,089,548, Patented Mar. 10, 1914.

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EDWARD L. GROSS, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF 'IO JOSEPH I. KOPPERL AND ONE-HALF TO CHARLES F. BIKER, OF CHICAGO, ILLINOIS.

AIR-P'URIFIEB.

resents.

Specification of Letters Patent.

Patented Mar. 19, 1914..

Application filed June 29, 1912. Serial No. 706,798.

To all 'LU/LOWL it may concern- Be it known that I, EDWARD L. Gnoss, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in AinPurifiers, of which the following is a description.

My invention relates particularly to a device applicable for use in sub-ways or tunnels used by street cars, railroad trains, or similar vehicles.

It is well known by those who have traveled in a sub-way that the air is foul owing to poor ventilation, dirt and the like. Where there are a great number of cars moving in the sub-way or tunnel, they continually stir up the air and make it worse.

The present device is intended for purifying the air and preventing the dust from flying about, and has among its objects the production of a device of the kind described that is simple, convenient, eflicient, sanitary and satisfactory, for use wherever found applicable.

To this end my invention consists in the novel construction, arrangement and combination of parts herein shown and described, and more particularly pointed out in the claim.

In the drawings, wherein like reference characters indicate like or corresponding parts, Figure 1 is a perspective view of a street car, or similar vehicle, equipped with my device. Fig. 2 is a View partly diagrammatic, to illustrate the invention.

Referring to the drawings, 1 represents a street car or the like, which is provided with a nozzle 2 arranged for discharging in a very fine spray, liquid supplied to it by the pipe 3. The liquid is supplied to the pipe 3 from a tank 7 through the pipe 4, extending below the fluid level, a valve 5 and controlling handle 6, or the equivalents being preferably provided for controlling the discharge of fluid through the nozzle 2. I do not wish to be understood as limiting myself to any particular form of discharge nozzle, as this may be modified as desired to produce the preferred spray.

As illustrated in Fig. 2, I force the liquid from receptacle 7 by means of the compressed air used for operating the trucks, but it should be understood that any equivalent source of air supply may be used. As shown, 11 represents the airtank connected to the receptacle 7 by the pipe 9, 10 being a safety valve, or its equivalent, for preventing excessive pressure in the receptacle. The air is conducted into the tank 11 from the pipe 12 by an electric pump 13, or the equivalent. The pump 13 is controlled by opening or closing the controlling circuit. This is done by providing a pneumatic switch 15, connected by a pipe 14:, to the tank 11, and a switch bar forming a part of the circuit 17 18 and 19. IVhen the pressure in the tank 11 reaches the desired point, the controller operates the switch bar 16, breaking the power controlling circuit. This part of the apparatus is automatic, and is a form commonly used, and I therefore make no claims for the same. I preferably provide my device on the rear end of the car, and inasmuch as cars of this type ordinarily are arranged to run in either direction, either end may for a time be the rear end. I therefore place a nozzle at each end of the car, and use the one which is at the rear end when the car is moving. its the car moves through the sub-way or tunnel it discharges in the form of a fine vapor the fluid contained in the receptacle 7. This fluid may be water or any other preferred liquid, which may be perfumed as desired, and which may also contain any desired disinfectant. As the car passes through it disinfects the subway for the succeeding car. Of course if the nozzle at the forward end is also turned on, the car, to a certain eX- tent, purifies the air through which it is passing.

Having thus described my invention, it is obvious that various immaterial modifications may be made in the same without departing from the spirit of my invention, hence I do not wish to be understood as limiting myself to the exact form, construction, arrangement and combination of parts herein shown and described, or uses mentioned.

What I claim as new and desire to secure by Letters Patent is In an apparatus of the class described, the combination with a passenger car, a compressed air storage tank and air compressing means communicating therewith and located at the under side of the car, a liquid receptacle on the car, a pipe connecting the tank and receptacle, a second pipe extending vertically of the car adjacent the end of the car and projecting through the top thereof, In testimony whereof, I have hereunto a nozzle arranged on said plpe and disposed slgnecl my name 111 the presence of two subto chrect the material passing through the scrlbing witnesses.

pipe in the line of travel of the car, a valve EDWARD L. GROSS. arranged in said pipe and controlling the Witnesses:

passage of fluid through the pipe, said valve ROY W. HILL,

being operable from the platform of the car. CHARLES I. COBB.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents, Washington, D. G. 

